Reply to SoundCard HELL! Help

Hi, Im new to this community but have been an avid reader of the DJTT blog for over a year now and have finally decided to join up

Onto my problem - Im having abit of a evening mare with soundcards in general and wondered if anyone could give me some help.

I had previously used a Behringer BCD3000 controller with integrated soundcard which worked PERFECTLY, however when i upgraded my pc to a laptop this also meant that my OS changed from XP to Vista and this is where the problems started... my BCD3000 wasn't really Vista compatible, so i decided to sell it and look for an alternative solution.

I then bought a Numark total control with a Maya44YSB soundcard. The soundcard worked great.. when it decided it wanted to play, however the drivers were unreliable (despite downloading the latest Vista compatible ones). Sometimes they would completely disappear when i would restart, other times they just wouldn't work and would require several re-installs before they would start working again.. so, in short as great as the soundcard was when it worked - it was unreliable. So back to the shop it went.

I then decided to buy a Numark DJIO believeing, its Numark, the controller's Numark, so hopefully it'll work together nicely... however this wasn't the case. When i installed the soundcard it would "pop" intermitently down the left channel, at increasing or decreasing intervals depending upon the latency setting....... At the lowest latency setting (3.9ms-4.9ms) it would "pop" approximately every 4-5 seconds; at the highest latency setting it would only "pop" every 4-5 minutes.

So - again - I sent it back..... however I have just received a replacement DJIO and it does exactly the same thing, down (bizzarely) only the left channel again! Im running out of ideas as to whats causing thhis, as its maybe not the soundcard.

Any help would be MASSIVELY appreciated as im quickly loosing my patience with Digital DJing because of the problems im having simply trying to get sound out

My setup is as follows: Numark Total control, Dell Studio 1535 with 32bit Vista, Traktor 3, Numark DJIO, Cambridge Audio A300 Integrated amp, Mordaunt Short MS902 speakers.